from a cruise were tallied under the month in 

 which the cruise mainly took place, even though 

 some may have been seen the first few days of 

 the succeeding month. In the species accounts, 

 and wherever else feasible, the numbers were 

 tallied by hand from the raw data. 



The totals in appendix table 2 came from the 

 ADP system and the tables of the section "Com- 

 ponents of abundance and distribution" are de- 

 rived from the latter. There are discrepancies 

 between these totals and the hand-tallied totals, 

 but they are small and, I feel, do not detract 

 appreciably from the accuracy of the text. A 

 dash indicates no observations made; an x indi- 

 cates that the species (or subspecies) was not 

 distinguished from very similar forms during 

 that cruise. 



Relative monthly abundance is discussed in 

 terms of known breeding locations and phenology. 



A final section in the species account deals 

 with the distribution of the species through 

 space and time, again in relation to breeding 

 locations and phenology. Included in this sec- 

 tion are comments on behavior that might in- 

 fluence distribution, or at least the distribution 

 of our sightings of the species. 



From cruise to cruise the variation in the 

 time of day that the ship was within 50 miles of 

 Oahu led to fluctuations in the observed abun- 

 dance of those species that occur mainly near 

 Oahu (e.g.. Red-footed Booby, Brown Noddy). 

 Such fluctuations bore only a chance resem- 

 blance to actual fluctuations in the abundance 

 of the species. 



The following terms were used to describe 

 relative abundance: 



abundant - seen several times daily or in 

 large numbers on a few days; 



common - seen once or twice daily or in 

 moderate numbers on a few days; 



uncommon - seen regularly several times 

 monthly; 



rare - seen irregularly once or twice month- 



ly; 



accidental - seen once or twice during the 

 study. 



The following terms were used to describe 

 status: 



resident - present all year or during the 

 breeding season, breeds in main Hawaiian 

 group; 



visitor - present during the nonbreeding sea- 

 son, does not breed in main Hawaiian group; 



migrant - present only during passage to land 

 masses or to oceanic areas distant from the 

 study area; 



hypothetical - occurrence in study area un- 

 confirmed. 



Black-footed Albatross 

 Diomedea nigripes Audubon 



This species, which ranges the entire North 

 Pacific during its nonbreeding season, appeared 

 in the Townsend Cromwell area on November 

 11, about 2 weeks after the arrival of the first 

 birds on the leeward Hawaiian chain, the breed- 

 ing grounds of the species. Numbers increased 

 through February, when eggs were hatching on 

 the Leewards. Thereafter, numbers declined 

 until June, when all adults had left their breed- 

 ing grounds. The last bird was seen June 12 

 in 1964 and June 29 in 1965. None was reported 

 from June 30 to November 10. 



Maximum numbers were seen on April 5, 

 1964 when 40 birds were gathered around the 

 ship's stern about 100 miles (185.3 km.) north 

 of Oahu, at the end of the March 1964 cruise. 

 (These are included in the total for March 1964 

 above.) 



Distribution : This species was most abundant 

 at the northern end of the area. In November, 

 it was not seen south of lat. 23° N. Thereafter 

 its range extended southward each month until 

 February when birds were seen as far south as 

 lat. 10°49' N. (fig. 3a). Northward contraction 



